Nut-lock



(No Model.)

W. N. MAY.

NUT LOOK.

No. 261,939. Patented Aug;.1, 1882.

l WITNESSES: 24% [NVENTORI c7, gi 1 0m Q A ATTOR /Q UNITED STATES PATENT OFFICE.

WILLIAM N. MAY, OF PITTSBURG, PENNSYLVANIA.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 261,939, dated August 1, 1882.

' Application filed May 11, 1882. (No model.)

' To all whom it may concern:

Be it known that I, WILLIAM N. lVIAY, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Nut-Locks; and I do hereby declare that the following is a full, clear, and exact description of the in- I vention, which will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, which form a part of this specification, and in. which- Figure 1 is a side elevation of a'rail-joint with my nut-lock; Fig. 2,a transverse section at the bolt-hole; Fig. 3,21. horizontal section at bolt-holes; Fig. 4, a horizontal section, and Fig. 5 an elevation, of the anchor-plate.

This invention relates to devices for lockingnuts, and has especial reference to the locking of the nuts on railway-rail joints, though it projects outwardly the stud e, whose base stands behind the anchor-plate a at the offset in the latter, The nuts D are then tightened down 111 position on the bolts 0. Then alocking-plate, E, having suitable shoulders, f, or other proj ections for abutting against the nuts, and having a key-hole slot, 9, similar to and corresponding in position to the slot 1), is placed so as to bear against the tops or bottoms or sides of thenuts D. Then the stud e is pushed over into the narrow part of the two slots b y, where the enlarged head of the stud holds the locking-plate E in its place. The stud is then prevented from working back by the spring .5,

. of plate form, which is riveted to the plate E in such position as to cover the large part of slot 9. In setting the plate E in position, when forcing it inwardly, the spring 3 yields to the pressure and allows the head of thestud e to come out under it. Then when the stud is pushed over into the narrow part of slot 9 the spring flies down and covers the hole. The stud can be pushed back and plate E removed only by forcing the spring s outwardly till the stud e is free to move.

I claim as my invention- The combination of the bolts O, nuts D,

anchor-plate a, having key-hole slot 1), stud e,

and locking-plate E, having key-hole slot g and spring 8, substantially as described.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in presence of two witnesses.

WILLIAM N. MAY.

Witnesses:

T. J. MOTIGHE, GEo. H. WELSH. 

